Hi, Is there a way to fix vm_page_alloc_contig() so it can allocate contiguous memory once userland has got up and running and memory has been fragmented/filled.
I've finished porting the bt848 driver to the newbus framework. You can load/unload the driver with kldload and kldunload. Great for testing. Load test, unload, recompile, repeat... However, the driver needs about 2 meg of contiguous memory allocating. It must be contiguous as hardware writes directly into it. (same applies to the meteor driver and probably some of the sound card drivers) I can start X, and load the 'bktr' driver. But once I run a few apps, and memory fills up, I can no longer allocate the contiguous memory required. Clearly the kernel would need to swap out user process memory pages to make room for the contigous memory vm_page_alloc_contig() requires. Can this be done? Bye Roger -- Roger Hardiman Strathclyde Uni Telepresence Research Group, Glasgow, Scotland. http://telepresence.dmem.strath.ac.uk 0141 548 2897 ro...@cs.strath.ac.uk To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
